Cita APA (7a ed.)

Westhuizen, J. v. d., & Oosthuizen, H. (1983). Portents of violence? Univ. of South Africa.

Cita Chicago Style (17a ed.)

Westhuizen, Jacob van der, y Hennie Oosthuizen. Portents of Violence? Pretoria: Univ. of South Africa, 1983.

Cita MLA (8a ed.)

Westhuizen, Jacob van der, y Hennie Oosthuizen. Portents of Violence? Univ. of South Africa, 1983.